mysql按時間範圍分區

一、問題描述
mysql的開發人員常常按時間範圍分區不知道時間上怎麼寫，筆者把總結概括下來，能幫助自已和分享成果。
二、解決問題
mysql對時間範圍分區，能夠是按年，按月，按天，按分，按秒，以下案例，這裏注意點：範圍分區是一個開始是開區間，結束是閉區間：[0,10),[10,20),[20,30).....
2.一、按年
CREATE TABLE sales_year
(

DATE DATETIME

)ENGINE = INNODB
PARTITION BY RANGE(YEAR(DATE))
(

PARTITION p2020 VALUES LESS THAN (2020),
 PARTITION p2021 VALUES LESS THAN (2021),
 PARTITION p2022 VALUES LESS THAN (2022),
 PARTITION pmax VALUES LESS THAN (maxvalue)

);
2.一、按月

CREATE TABLE sales_month

(

DATE DATETIME

)ENGINE = INNODB
PARTITION BY RANGE(MONTH(DATE))
(

PARTITION p202001 VALUES LESS THAN (202001),
 PARTITION p202002 VALUES LESS THAN (202002),
 PARTITION p202003 VALUES LESS THAN (202003),
 PARTITION pmax VALUES LESS THAN (maxvalue)

);
2.二、按天

CREATE TABLE sales_day

(

DATE DATETIME

)ENGINE = INNODB
PARTITION BY RANGE(TO_DAYS(DATE))
(

PARTITION p20200101 VALUES LESS THAN (20200101),
 PARTITION p20200202 VALUES LESS THAN (20200102),
 PARTITION p20200203 VALUES LESS THAN (20200103),
 PARTITION pmax VALUES LESS THAN (maxvalue)

);
2.三、按分
CREATE TABLE sales_second
(

date timestamp

)ENGINE = INNODB
PARTITION BY RANGE(TO_SECONDS(DATE))
(

PARTITION p1 VALUES LESS THAN (63769153669),
 PARTITION P2 VALUES LESS THAN (63769153734),
 PARTITION p3 VALUES LESS THAN (63769153752),
 PARTITION pmax VALUES LESS THAN (maxvalue)

);
2.四、按秒
CREATE TABLE sales_timestamp
(

id INT,
DATE TIMESTAMP

)
PARTITION BY RANGE ( UNIX_TIMESTAMP(DATE) )
(

PARTITION p1 VALUES LESS THAN ( UNIX_TIMESTAMP('2020-10-02 00:00:00') ),
PARTITION p2 VALUES LESS THAN ( UNIX_TIMESTAMP('2020-10-03 00:00:00') ),
PARTITION p3 VALUES LESS THAN ( UNIX_TIMESTAMP('2020-10-04 00:00:00') ),
PARTITION p4 VALUES LESS THAN ( UNIX_TIMESTAMP('2020-10-05 00:00:00') ),
PARTITION p5 VALUES LESS THAN ( UNIX_TIMESTAMP('2020-10-06 00:00:00') ),
PARTITION p6 VALUES LESS THAN ( UNIX_TIMESTAMP('2020-10-07 00:00:00') ),
PARTITION p7 VALUES LESS THAN ( UNIX_TIMESTAMP('2020-10-08 00:00:00') ),
PARTITION p8 VALUES LESS THAN ( UNIX_TIMESTAMP('2020-10-09 00:00:00') ),
PARTITION p9 VALUES LESS THAN ( UNIX_TIMESTAMP('2020-10-10 00:00:00') ),
PARTITION p10 VALUES LESS THAN (UNIX_TIMESTAMP('2020-10-11 00:00:00') ),
PARTITION pmax VALUES LESS THAN (maxvalue)

);

INSERT INTO sales_timestamp(ID,DATE) VALUES( 1,CURRENT_TIMESTAMP());INSERT INTO sales_timestamp(ID,DATE) VALUES( 2,CURRENT_TIMESTAMP());INSERT INTO sales_timestamp(ID,DATE) VALUES(3,CURRENT_TIMESTAMP());INSERT INTO sales_timestamp(ID,DATE) VALUES(4,CURRENT_TIMESTAMP());INSERT INTO sales_timestamp(ID,DATE) VALUES( 5,CURRENT_TIMESTAMP());INSERT INTO sales_timestamp(ID,DATE) VALUES( 5,'2020-10-05 00:00:00');